Patents-Review.com
ClassID:

137263 ⎘

F01L3/20 - CPC Classification

Classification description:

Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof Shapes or constructions of valve members, not provided for in preceding subgroups of this group

Sub-classes:
Recent Application in this class:
#1
20250354504
2025-11-20

TAPERED ENGINE EXHAUST VALVE

 #2
20240254900
2024-08-01

HOLLOW POPPET VALVE AND METHOD OF MANUFACTURING

 #3
20240240577
2024-07-18

VALUE FOR AN INTERNAL COMBUSTION ENGINE AND PRODUCTION METHOD

 #4
20240229687
2024-07-11

HYDROGEN COMBUSTION ENGINE AND PASSENGER CAR AND COMMERCIAL VEHICLE

 #5
20240035399
2024-02-01

Air intake for a lean-burn gasoline engine

 #6
20240011567
2024-01-11

Poppet Valve

 #7
20220341350
2022-10-27

Multi-valve

 #8
20220282645
2022-09-08

Poppet valve and internal combustion piston engine head including same

 #9
20220168798
2022-06-02

Method for producing a hollow valve for internal combustion engines

 #10
20220048130
2022-02-17

Method for producing a welded cavity valve

 #11
20220034243
2022-02-03

Engine valve with raised ring or dimple

 #12
20210370376
2021-12-02

Method for producing a hollow valve for internal combustion engines

 #13
20210301689
2021-09-30

Valve seat insert with soft landing insert design with contoured radii

 #14
20210301688
2021-09-30

Valve seat insert with soft landing insert design with contoured radii

 #15
20210293160
2021-09-23

Valve seat insert with soft landing insert design with contoured radii

 #16
20210293159
2021-09-23

Valve seat insert with soft landing insert design with contoured radii

 #17
20210270154
2021-09-02

Method for manufacturing engine poppet valve

 #18
20210180540
2021-06-17

Piston for internal combustion engine having valve pocket step for slowing combustion gas flow

 #19
20210180480
2021-06-17

Engine valve with raised ring or dimple

 #20
20210180478
2021-06-17

Engine head assembly with valve seat insert with stiffness relief cutout

 #21
20210054768
2021-02-25

Valve seat insert for high power density and high speed diesel engines

 #22
20210017885
2021-01-21

Continuous variable valve duration apparatus and engine provided with the same

 #23
20200308998
2020-10-01

Poppet valve for internal combustion engine

 #24
20200300182
2020-09-24

A GAS FEEDING ARRANGEMENT

 #25
20200232354
2020-07-23

Internal combustion engine with at least one hollow-head valve

 #26
20200157979
2020-05-21

Internal combustion engine

 #27
20200102629
2020-04-02

High temperature alloy for casting engine valves

 #28
20200095907
2020-03-26

Hollow engine valve and manufacturing method therefor

 #29
20200094323
2020-03-26

Poppet valve and method of its manufacture

 #30
20200072096
2020-03-05

COMBUSTION CHAMBER OF ENGINE

 #31
20200056516
2020-02-20

Internally cooled poppet valve for internal combustion engine

 #32
20190338682
2019-11-07

Inside-cooled disc valve and a semi-finished product and method for its production

 #33
20190277169
2019-09-12

Hollow Valve For An Engine

 #34
20190242278
2019-08-08

Internal combustion engine having a valve actuation device

 #35
20190136982
2019-05-09

GAS EXCHANGE VALVE FOR AN INTERNAL COMBUSTION ENGINE

 #36
20190063271
2019-02-28

Valve for an internal combustion engine

 #37
20190024541
2019-01-24

Metering plate for reduction in discharge coefficient variation between gaseous fuel injectors

 #38
20190003350
2019-01-03

Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same

 #39
20180347414
2018-12-06

COOLED VALVE FOR INTERNAL COMBUSTION ENGINES HAVING A LOAD RELIEF GROOVE

 #40
20180306329
2018-10-25

RECIPROCATING EXPANDER VALVE

 #41
20180283316
2018-10-04

Internal combustion engine

 #42
20180283265
2018-10-04

Internal combustion engine

 #43
20180283264
2018-10-04

Internal combustion engine

 #44
20180179614
2018-06-28

High temperature alloy for casting engine valves

 #45
20180171837
2018-06-21

Poppet valve for an internal combustion engine

 #46
20180142608
2018-05-24

Internal combustion engine with reduced engine knocking

 #47
20180104776
2018-04-19

Precision forming method of high-efficiency and near-net hollow valve blank of engine

 #48
20170348782
2017-12-07

Method for producing a hollow valve

 #49
20170342873
2017-11-30

Windowed intake valve stem

 #50
20170276032
2017-09-28

Engine valve and method of producing the same

 #51
20170241304
2017-08-24

Valve arrangement

 #52
20170234175
2017-08-17

Hollow engine valve and manufacturing method therefor

 #53
20170218798
2017-08-03

Exhaust valve assembly for a two-stroke internal combustion engine and method for cleaning same

 #54
20170211434
2017-07-27

Poppet valve and method for manufacturing same

 #55
20170211433
2017-07-27

Intake valve apparatus for use with a combustion engine and methods of use and manufacture thereof

 #56
20170204752
2017-07-20

METALLIC HOLLOW VALVE FOR AN INTERNAL COMBUSTION ENGINE OF A UTILITY MOTOR VEHICLE

 #57
20170183988
2017-06-29

Valve operating device for internal combustion engine

 #58
20170159628
2017-06-08

High-pressure fuel pump and pressure control device

 #59
20170152768
2017-06-01

ENGINE VALVE

 #60
20170122146
2017-05-04

Combustion engine intake valve

 #61
20160359434
2016-12-08

Motor driver of motor for valve timing control of internal combustion engine

 #62
20160326919
2016-11-10

Assembly of internal combustion engine valve and valve seat

 #63
20160279711
2016-09-29

Method for manufacturing a valve spindle

 #64
20160273418
2016-09-22

Single crystal engine valve

 #65
20160273415
2016-09-22

VALVE ACTUATION SYSTEM HAVING GROOVED ADJUSTING SCREW

 #66
20160265493
2016-09-15

Emissions reduction system for an internal combustion engine

 #67
20160265396
2016-09-15

Exhaust valve and an engine assembly including the exhaust valve having a pressure relief apparatus

 #68
20160245133
2016-08-25

Two path two step actuator

 #69
20160186621
2016-06-30

Device for producing at least one hollow valve

 #70
20160169400
2016-06-16

GAS EXCHANGE VALVE

 #71
20160130992
2016-05-12

Valve actuating device

 #72
20160091293
2016-03-31

Modular system for checking a valve seat and a valve guide in cylinder heads of internal combustion engines

 #73
20160053641
2016-02-25

Hollow poppet valve

 #74
20150377089
2015-12-31

Valve for internal combustion engines and method for obtaining a valve

 #75
20150369090
2015-12-24

Highly wear-resistant valve seat for use in internal combustion engine

 #76
20150308303
2015-10-29

Intake valve for engine

 #77
20150240675
2015-08-27

Hollow poppet valve

 #78
20150211393
2015-07-30

Structure of air flow control valve and intake device

 #79
20150192041
2015-07-09

Valvetrain impact absorber

 #80
20150152755
2015-06-04

ENGINE CONTROL VALVE PROVIDED WITH AN IMPROVED OPENING

 #81
20150136060
2015-05-21

Valve for a valve device

 #82
20150075489
2015-03-19

Internal combustion engine and method for operating an internal combustion engine

 #83
20140360452
2014-12-11

Method for producing a built hollow valve

 #84
20140360447
2014-12-11

Gas exchange valve of an internal combustion engine

 #85
20140305398
2014-10-16

Cylinder head comprising a shroud

 #86
20140283384
2014-09-25

Method of manufacturing a valve for an internal combustion engine

 #87
20140083389
2014-03-27

Cylinder head with annular valve for internal-combustion engine

 #88
20140033533
2014-02-06

Method for manufacturing hollow engine valve

 #89
20140014057
2014-01-16

Heat transferring engine valve for fuel conservation

 #90
20130319364
2013-12-05

Tappet for a valve train or a pump drive and method of making a tappet

 #91
20130312694
2013-11-28

INTAKE ENGINE VALVES

 #92
20130025571
2013-01-31

INTERNAL COMBUSTION ENGINE

 #93
20120304464
2012-12-06

METHOD FOR MANUFACTURING HOLLOW ENGINE VALVE

 #94
20120279471
2012-11-08

SPARK IGNITION FOUR-STROKE CYCLE ENGINE

 #95
20120266840
2012-10-25

FOUR-STROKE INTERNAL COMBUSTION ENGINE AND EXHAUST VALVE

 #96
20120240887
2012-09-27

Device and method configured to control valve operation in a piston engine

 #97
20120138840
2012-06-07

INTAKE AND EXHAUST VALVE FOR VEHICLE

 #98
20120090456
2012-04-19

Piston type pneumatic engine

 #99
20120017876
2012-01-26

High expansion ratio internal combustion engine

 #100
20120017860
2012-01-26

Pressure balanced engine valves

 #101
20120012089
2012-01-19

Knock resistant split-cycle engine and method

 #102
20110297112
2011-12-08

Forced air valve guide for an internal combustion engine

 #103
20110265456
2011-11-03

Diesel Engine and Method for Flexible Passive Regeneration of Exhaust After-Treatment Devices

 #104
20110220054
2011-09-15

Cylinder head for improved fluid flow performance

 #105
20110192363
2011-08-11

Valve arrangement for a combustion engine

 #106
20110186000
2011-08-04

Hollow poppet valve and method of manufacturing the same

 #107
20110126791
2011-06-02

Exhaust poppet valve and solution heat treatment method of the same

 #108
20110061365
2011-03-17

Exhaust valve for a large sized two stroke diesel engine, process for reduction on NO-formation in such an engine and such engine

 #109
20110031886
2011-02-10

Plasma apparatus using a valve

 #110
20110030642
2011-02-10

Inlet valve, internal combustion engine and transportation apparatus including the same

 #111
20100300417
2010-12-02

INTERNAL COMBUSTION ENGINE HAVING A TRANSITIONALLY SEGREGATED COMBUSTION CHAMBER

 #112
20100275875
2010-11-04

Sliding component for internal combustion engine, internal combustion engine, transporter, and method for producing the sliding component for internal combustion engine

 #113
20100263624
2010-10-21

Premixed compression ignition diesel engine

 #114
20100230598
2010-09-16

System and method for valve seat gap evaluation

 #115
20100192892
2010-08-05

Hybrid valve for internal combustion engines

 #116
20100181515
2010-07-22

Air spring with cap

 #117
20100180851
2010-07-22

PISTON ENGINE COMPRISING MEMBER TO COVER BOTTOM FACE OF VALVE HEAD OF POPPET VALVE

 #118
20100095940
2010-04-22

Supercharged internal combustion engine

 #119
20100037840
2010-02-18

Internal combustion engine

 #120
20090293597
2009-12-03

System and method for monitoring combustion chamber pressure and control system using the same

 #121
20090241870
2009-10-01

VARIABLE INTAKE VALVE ASSEMBLY FOR INTERNAL COMBUSTION ENGINE

 #122
20090178633
2009-07-16

Throttle-less engine with improved variable valve system

 #123
20090173299
2009-07-09

Valve system for opposed piston engines

 #124
20090151708
2009-06-18

INTERNAL COMBUSTION ENGINE HAVING A SELECTIVELY INSULATED COMBUSTION CHAMBER

 #125
20090151691
2009-06-18

Tappet clearance adjusting cover coupled with secondary air valve

 #126
20090095247
2009-04-16

Intake valve for lessening accumulation of high boiling fraction from fuel

 #127
20090050675
2009-02-26

Friction Welding Method and Components Produced From Steel and Metal Aluminide Using an Intermediary From an Ni Alloy

 #128
20090044778
2009-02-19

Pressure balanced engine valves

 #129
20090039300
2009-02-12

Hydro-mechanical valve actuation system for split-cycle engine

 #130
20090038599
2009-02-12

Split-cycle engine with a helical crossover passage

 #131
20090038598
2009-02-12

Split-cycle engine with early crossover compression valve opening

 #132
20090038597
2009-02-12

Knock resistant split-cycle engine

 #133
20090038596
2009-02-12

Spark plug location for split-cycle engine

 #134
20080276615
2008-11-13

Harmonic engine

 #135
20080272325
2008-11-06

Lightweight valve

 #136
20080237295
2008-10-02

Exhaust check valve and piston return system

 #137
20080230028
2008-09-25

Outward-opening gas-exchange valve system for an internal combustion engine

 #138
20080092383
2008-04-24

PROCESS FOR THE PRODUCTION OF COMPONENTS FOR COMBUSTION ENGINES OR TURBINES

 #139
20080060600
2008-03-13

Poppet valve for an internal combustion engine

 #140
20080060599
2008-03-13

Internal combustion engine

 #141
20070283939
2007-12-13

Turbo-lag compensation system for an engine

 #142
20070266984
2007-11-22

Lightweight Valve

 #143
20070145322
2007-06-28

Lightweight valve

 #144
20070125976
2007-06-07

Method of manufacturing a lightweight valve

 #145
20070044749
2007-03-01

Inverted poppet valve for internal combustion engine

 #146
20070040144
2007-02-22

Gas exchange valve for an internal combustion engine

 #147
20070039585
2007-02-22

Valves for internal combustion engines and methods thereof

 #148
20070017475
2007-01-25

Valve guide structure

 #149
20060278193
2006-12-14

Gas exchange valve of an internal combustion engine

 #150
20060236959
2006-10-26

Pneumatically actuated valve for internal combustion engines

 #151
20060231056
2006-10-19

Internal Combustion Engine

 #152
20060180115
2006-08-17

Exhaust valve for internal combustion engine

 #153
20050241597
2005-11-03

Air and fuel supply system for a combustion engine

 #154
20050217622
2005-10-06

Valve mechanism with a variable valve opening diameter

 #155
20050098137
2005-05-12

Intake/exhaust valve and its seal for internal combustion engine

 #156
20050076875
2005-04-14

Multi-piece valve for reciprocating piston engines

 #157
20050034699
2005-02-17

Valve arrangement for a combustion engine

 #158
20050005885
2005-01-13

Valve mechanism, in particular for internal combustion engines of motor vehicles

 #159
18909436
2025-05-27

Valve for an overhead cam engine and an overhead cam engine assembly

 #160
17452136
2023-03-28

Intake valve systems

 #161
17201423
2022-02-08

Gasket for a valve of an internal combustion engine

 #162
16544182
2020-09-08

Valve seat insert for long life natural gas lean burn engines